A particle known as a pion lives for a short time before breaking apart into other particles. Suppose a pion is moving at a speed of 0.987c, and an observer who is stationary in a laboratory measures the pion's lifetime to be 2.6 x 10^-8 s. a) What is the lifetime according to a hypothetical person who is riding along with the pion? b) According to this hypothetical person, how far does the laboratory move before the pion breaks apart?